Longitudinal Double Spin Asymmetry And Cross Section For Inclusivejet Production In Polarized Proton Collisions At Sqrt S
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Longitudinal Double Spin Asymmetry And Cross Section For Inclusivejet Production In Polarized Proton Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2006
Longitudinal Double Spin Asymmetry And Cross Section For Inclusivejet Production In Polarized Proton Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
We report a measurement of the longitudinal double-spinasymmetry A_LL and the differential cross section for inclusivemidrapidity jet production in polarized proton collisions at sqrt(s)=200GeV. The cross section data cover transverse momenta 5
The Stigma Of Mental Illness End Of The Story
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Author : Wolfgang Gaebel
language : en
Publisher: Springer
Release Date : 2016-08-10
The Stigma Of Mental Illness End Of The Story written by Wolfgang Gaebel and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-08-10 with Medical categories.
This book makes a highly innovative contribution to overcoming the stigma and discrimination associated with mental illness – still the heaviest burden both for those afflicted and those caring for them. The scene is set by the presentation of different fundamental perspectives on the problem of stigma and discrimination by researchers, consumers, families, and human rights experts. Current knowledge and practice used in reducing stigma are then described, with information on the programmes adopted across the world and their utility, feasibility, and effectiveness. The core of the volume comprises descriptions of new approaches and innovative programmes specifically designed to overcome stigma and discrimination. In the closing part of the book, the editors – all respected experts in the field – summarize some of the most important evidence- and experience-based recommendations for future action to successfully rewrite the long and burdensome ‘story’ of mental illness stigma and discrimination.
Inclusive Jet And Dijet Production In Polarized Proton Proton Collisions At The Square Root Of Sigma
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Author : Tai Sakuma
language : en
Publisher:
Release Date : 2010
Inclusive Jet And Dijet Production In Polarized Proton Proton Collisions At The Square Root Of Sigma written by Tai Sakuma and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
The inclusive jet cross section, the dijet cross section, and the dijet longitudinal double spin asymmetry ALL in polarized proton-proton collisions at [square root of sigma] = 200 GeV are measured with a data sample of 5.4 pbm collected with the STAR detector during RHIC Run-6. The inclusive cross section is measured as a function of jet transverse momentum PT in the range of 10
Longitudinal Double Spin Asymmetry And Cross Section For Inclusive Neutral Pion Production In Polarized Proton Collisions At The Square Root Of Sigma
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Author : Alan Michael Hoffman
language : en
Publisher:
Release Date : 2009
Longitudinal Double Spin Asymmetry And Cross Section For Inclusive Neutral Pion Production In Polarized Proton Collisions At The Square Root Of Sigma written by Alan Michael Hoffman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
Twenty years of polarized lepton-nucleon scattering experiments have found that the contribution from quark spins (1/2[delta] [sigma]) to the spin of the proton is only ~ 35%. This has lead researchers to look elsewhere, specifically to gluon spin ([delta sigma]) for a large contribution to proton spin. [delta sigma] has been only loosely constrained in polarized DIS and SIDIS experiments. Polarized proton-proton collisions at RHIC provide sensitivity to [delta sigma] through measurements of the longitudinal double-spin asymmetry, ALL. This work presents a measurement of ALL for inclusive 7ro production in polarized proton-proton collisions using the STAR detector and data from RHIC Run 6. 7r0s are abundantly produced at mid-rapidity in proton-proton collisions, making them natural candidates for studies of [delta] [sigma]. Novel techniques for reconstructing 7ros at STAR are discussed, and a measurement of the unpolarized cross section presented. Finally, the measured ALL is compared to perturbative QCD predictions and from this comparison constraints are placed on [delta] [sigma].
Longitudinal Double Spin Asymmetry For Inclusive Jet Production In Polarized Proton Proton Collisions At Square Root Of S
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Author : Julie Marie Millane
language : en
Publisher:
Release Date : 2008
Longitudinal Double Spin Asymmetry For Inclusive Jet Production In Polarized Proton Proton Collisions At Square Root Of S written by Julie Marie Millane and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
We present the Inclusive Jet Longitudinal Double-Spin Asymmetry for polarized protons at \s = 200 GeV. The data were taken on the STAR experiment at RHIC during the 2005 run period and cover a jet transverse momentum range of 5
Measurement Of Longitudinal Double Spin Asymmetries Of Pi Production In P Over Arrow P Over Arrow Collisions At Sqrt S
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Author : Adam Philip Kocoloski
language : en
Publisher:
Release Date : 2010
Measurement Of Longitudinal Double Spin Asymmetries Of Pi Production In P Over Arrow P Over Arrow Collisions At Sqrt S written by Adam Philip Kocoloski and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
Spin dependent measurements provide incisive tests for modern theories of particle physics. The discovery that the integral of the quark helicity distribution is much too small to account for the spin of the proton is an excellent case in point. It inspired an intense period of theoretical scrutiny and a new generation of experiments to study [Delta]g, the helicity distribution of gluons in the nucleon. In particular, the unique polarized proton collider at RHIC enables a class of asymmetry measurements that are directly sensitive to gluon polarization. The STAR experiment at RHIC measures the double spin asymmetry A[subscript LL] for a variety of final states in collisions of longitudinally polarized protons in order to constrain [Delta]g. Asymmetries for mid-rapidity charged pion production benefit from large cross sections and the excellent tracking and particle identification capabilities of the STAR Time Projection Chamber. This thesis presents the first measurements of charged pion A[subscript LL] at STAR. The measurements are compared to predictions based on perturbative QCD calculations and from this comparison model-dependent constraints are placed on the integral gluon polarization [Delta]G.
Measurement Of The Longitudinal Double Spin Asymmetry For Dijet Production In Polarized Proton Proton Collisions At Sqrt S
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Author : Daniel L. Olvitt
language : en
Publisher:
Release Date : 2017
Measurement Of The Longitudinal Double Spin Asymmetry For Dijet Production In Polarized Proton Proton Collisions At Sqrt S written by Daniel L. Olvitt and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
Understanding what contributes to the intrinsic angular momentum (spin) of the proton has been a major goal of the nuclear physics community. In the 1980s, it was discovered that quarks contribute 30% to the spin of the proton. This information led to a search to find other contributions to the spin of the proton. At STAR, the double spin asymmetry (ALL) is measured as it is sensitive to the polarized gluon distribution (Dg(x)). The STAR 2009 inclusive jet ALL at sqrt(s) = 200 GeV has been incorporated into two independent global fits. These fits show for the first time a statistically significant non-zero gluon contribution to the spin of the proton in the parton momentum fraction range x > 0.05. Dijet ALL is also measured at STAR. Dijets are advantageous since the parton momentum fraction (x) of the initial partons may be reconstructed to first order from final state measurements. In 2013 STAR collected an estimated 250 pb-1 of data at sqrt(s) = 510 GeV. The higher center of mass energy will allow STAR to probe Dg(x) at x values as low as 0.02. The large statistics will allow a reduction in the uncertainties. Once the data is incorporated into future global fits, it will allow for a more precise determination of Dg(x). The 2013 dijet ALL results will be presented. The results show good agreement with both global fits and previous STAR results dijet measurements.
Measurement Of The Double Longitudinal Spin Asymmetry In Inclusive Jet Production In Polarized P P Collisions At S
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Author :
language : en
Publisher:
Release Date : 2005
Measurement Of The Double Longitudinal Spin Asymmetry In Inclusive Jet Production In Polarized P P Collisions At S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
We present preliminary results for the first measurements of the double longitudinal spin asymmetry A{sub LL} in inclusive jet production at mid-rapidity in polarized proton-proton collisions at √s = 200 GeV. The data amount to ≈ 0.5 pb−1 collected at RHIC in 2003 and 2004 with beam polarizations up to 45%. The jet transverse energies are in the range of 5
Longitudinal Double Spin Asymmetry For Inclusive Jet Production In Vec P Vec P Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2007
Longitudinal Double Spin Asymmetry For Inclusive Jet Production In Vec P Vec P Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.
We report a new STAR measurement of the longitudinal double-spin asymmetry A{sub LL} for inclusive jet production at mid-rapidity in polarized p + p collisions at a center-of-mass energy of (square root)s = 200 GeV. The data, which cover jet transverse momenta 5
Longitudinal Double Spin Asymmetry In Inclusive Jet Production Atstar
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Author : STAR Collaboration
language : en
Publisher:
Release Date : 2006
Longitudinal Double Spin Asymmetry In Inclusive Jet Production Atstar written by STAR Collaboration and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
This contribution reports on the first measurement of the longitudinal double-spin asymmetry A{sub LL} for the inclusive production of jets in polarized proton-proton collisions at {radical}s = 200 GeV. The data were collected with STAR at RHIC in the years 2003 and 2004, and correspond to a sampled integrated luminosity of 0.3 pb{sup -1} with beam polarizations up to 45%. The results on A{sub LL} cover jet transverse momenta 5